o60 
Dr. W. II. Harvey’s Account of the Marine Botany of 
King George’s Sound and Eottnest (51). A beautiful and very distinctly characterized 
species of the G. Turneri section, which I first gathered at Belligam Bay, Ceylon, in com- 
pany with my friend G. H. K. Thwaites, Esq., of Peradenia Botanical Gardens. 
292 . Callithamnion cymosum, n. sp. ; deusissime csespitosum; fills primariis repentibus intricatis, 
secundariis erectis arachnoideis (uncialibus) vage ramosis, ramis subdichotomis v. alternis 
minoribus filiformibus erectis longe simplicibus obtusis, articulis diametro multoties 
(8-12-plo) longioribus oylindraceis ; tetrasporis in cymis veris sequalibus v. scirpoideis 
secus ramos evolutis dispositis ; favellis ? On sand-covered rochs, Middleton Bay, 
King George’s Sound and Eottnest; often half buried in sand (10). The cymoid inflores- 
cence is very peculiar, and beautifully accurate to the typical cyme. 
293 . Callithamnion delicatulum, n. sp. ; pusillum, arachnoideum, filo primario repente; secunda- 
riis erectis (vix uncialibus) parum ramosis e quoque geniculo plumulatis, plumulis oppo- 
sitis per paria decussatis infra apicem articuli egredientibus tenuibus laxe pinnatis, pinnulis 
inferioribus so3pius oppositis reliquis alternis e rachide flexuosa emissis omnibus attenuatis 
simplicibus v. ramulo uno alterove auctis ; fructu Parasite on Solieria australis, 
at King George’s Sound. A very delicate and beautiful little plant (339). 
294 . Callithamnion n. sp. ; minutum (1-2 lineas altum); filo primario repente crasso 
ramos suboppositos liberos emittente; ramis filo primario quadruplo-angustioribus pinnatis, 
pinnis oppositis patentibus simplicibus v. latere inferior! subramellosis subattenuatis obtu- 
siusculis; articulis fill primarii diametro sesqui v. subduplo, ramorum 4-5-plo, ramulorum 
sesquilongioribus. Parasite on Fucoids, Eottnest, rare (327). Apparently nearly allied to 
C. leptocladum, Mont.; but scarcely the same? 
295 . Callithamnion acaZeafam, n. sp. ; filo primario repente; secundariis erectis (sub-uncialibus) 
capillaribus subdichotomis V. alterne ramosis corymboso-fastigiatis; ramis omnium serierum 
quoquoversum egredientibus, minoribus caule duplo-angustioribus, ramulis ad genicula fere 
omnia verticillatis spinajformibus patentissimis brevissimis simplicibus subacutis; tetra- 
sporis solitariis ad ramulos lateralibus; articulis ramorum diametro 2-3-plo-longioribus. 
On Zostera, at King George’s Sound, rare (343). 
296 . Callithamnion Kiitz. ? Cal.tomentellum,IIarv.MS. Very common, everywhere 
on Alyw, &c. This species is so common that it can hardly have escaped Peeiss, and there- 
fore I suppose it the C. spinescens of Sender’s list. But the ramuli are not ivhorled ; but 
oppiosite and decussated ; one pair spreading one way, the next at right angles to them. In 
all my specimens the articulations of the stem are very short. In habit, it has much re- 
semblance to Jungermannia tomentella (48). 
297- Callithamnion ho7-Kontale, n. sp. ; fills erectis (uncialibus) capillaribus solitariis parum 
ramosis, ramis 3-4-lateralibus simplicibus patentibus cum filo primario e quoque articulo 
opposite plumulatis; plumulis e medio articuli egredientibus subdistichis horizontaliter 
patentibus (latus planum sursum vertentibus) ambitu ovatis pinnatis ; pinna infima simplici, 
casteris furcatis; articulis omnibus diametro aaqualibus v. sesquilongioribus; apicibus acu- 
tis; tetrasporis solitariis ramulum pusillum pinnarum terminantibus. Parasitic on Griff. 
Binderiana at Eottnest; and on Pol. nigrita at Garden Island (254). 
